Thanks for that Twister.
Well I started taking the Escitalopram again and, lo and behold, had no more symptoms. So I had 3 days of hell, but from the 4th day no problems.
I increased the dosage from 5 to 10mg a couple of days back and the symptoms have come back. I'm banking on the idea that they will go away again in the next few days as the body gets used to it. I'll post on the progress.